Knitting-machine stop mechanism.



A. VILLENEUVB. KNITTING MACHINE STOP MECHANISM.

APPLICATION FILED JAN. 16. 1911. 1,003,675. Pa ented Sept. 19, 1911.

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6/ Slnuewboz WM 1 a 3rcelas fillepeure MOM A. VILLBNEUVE. 4 KNITTING MACHINE STOP MECHANISM.

APPLICATION FILED JAN. 16, 191]. Patentedpsept' 19 1771919206 Wlpeuve V QKMQ ARCHELAS VILLENEUVE, F F

RANKLIN, NEW HAMPSHIRE.

KNITTING-MACHINE STOP MECHANISM.

Specification of Letters Patent. Application filed January 16, 1911.

Patented Sept. 19, 1911. Serial No. 602,866.

To all whom it may concern:

Be it known that: T. Anonnms VILLE- NEUVE,1L(:itiZPIl of the United States. residing at Franklin, in the county of Merrimack and State of New llampshire, have invented certain new and useful improvements in Knitting-Machine Stop lvleehanisnl, of which the following is a specification.

My invention relates to knitting machine stop mechanism, of the character which antomatically stops a knitting machine in case the thread should break or hccomc tangled or snarled whereby the thread is prevented from being freely fed to the needle.

An important object of this invention is to provide mechanism of the above chaacter, which is automatic and reliable in its operation.

Other objects and advantages of my invention will be apparent during the course of the following description.

In the acci'an 'mnying lrawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a front view of the stop mechanism, Fig. 2 is a side view of the same, Fig. 3 is an enlarged detailed sectional view taken on line 3-3 of Fig. 1, Fig. 4 is a horizontal sectional view taken on line 4- of Fig. 1,

Fig. 4 an'end view of a rock-shaft showing means to hold the same against movement, Fig. 5 is an enlarged plan View taken on line 55 of Fig. 1, Fig. 6 is a vertical sectional view taken on line 66 of Fig. 1, and looking in the direction of the arrows, Fig. 7 is a perspective view of a pivoted lever and means for actuating the same, Fig. is a side view of aslightly modified form 01 means for suymortmg the thread, to feed the same to the knitting machine, Fig. 9 is a plan view of the same, Fig. 10 is an end view of a slightly modified form of hammer,

Fig. 11 is a plan View thereof, and, Fig. 12

is a side View of the same.

My stop mechanism is designed to be used in connection with the knitting machine disclosed in the Patent Number 726,178, granted to G. I). Mayo, under date of April 21,

In the drawings wherein is illustrated a preferred embodiment of my invention, the numeral 1 designates a main support, which is to be suitably mounted upon the framework of the Mayo knitting machine. To the lower end of the main supp rt 1 is rigidly connected an approximately U-shapcd easting 2. The casting 2 has its transverse arms provided with heads 3, through which is journaled a rock-shaft 4, carrying a. handle 5 upon one end thereof. This rock-shaft'is provided within the casting 2 with a plate 6, which is rigidly mounted thereon. This plate is provided upon one side thereof with a pair of spaced pins 7, between which is disposed a link having pivotal connection with the rock-shaft 4. This link carries a pin 9, having connection with one end of a handbrake 10, as shown. This handbrake surrounds an annular flange 11, provided with ears 1.2, which are suitably rigidly connected with a pinion 138, which pinion forms a poifjion of the above referred to knitting machine. The band-brake 10 has one end thereof connected with the. rock-shaft 4, as shown.

The main support 1 carries a plate or baso13, upon which are suitably mounted spools of thread '14. as shown. F orwardl of the main sruiportl is a supporting sha t 15, which connected with said main support by means of upper and lower horizontal arms 16 and 17, respectively. Near and below the lower arm 17, the supporting shaftcarries a rearwardly extending arm 18, having a head 19, within which is slidahly mounted a. vertically disposed reciprocatory rod 20. The reciproeatory rod 20 has rigid connection near its lower end with a catch 'or finger 21. The rod 20 earrlcs a compressible coil spring 22, which is disposed be tween the arm 18 and the catch 21, whereb such spring serves to urge the rod 20 down-- wardly.

The supporting shaft .15 is provided inter mediate its ends with a supporting structure including a rearwardly extending arm 23, havin a head 24, through which the upper cm? of the reciproeatory rod 20 is slidably mounted, as clearly shown in F igs. 2 and 3. Uponl the arm is rigidly mounted rem-m 2:3, carrying an upstanding lug 26 near its rear end and an upstanding plate 27. A horizontal operating lever 28 has its rear end pivotally connected with the lug 26, shown at 29. The forward end of the lever 28 is enlarged, as shown,

and is adapted for insertion within a recess 30 formed in the upper end of the plate 27, as more clearly shown in Fig. 7. The 'reciprocatory rod 20 and lever 28 are connected by a link 31. Pivotally connected with the upstanding plate 27 are pairs of swinging levers 32, as shown at 33. These levers are so positioned that when they are oscillated downwardly, their inner eltds will engage the operating lever 28, to elevate the same. The swinging le'vers 32 extend in opposite directions and each of the same is provided upon its outer end with a crank or 011 set portion 34; The supporting structure comprising the arm 23 further com prises a pair of oppositely extending arms 35, which are disposed below the swinging levers 32, when such levers are in their normalpositions. The oppositely extending arms 35 carry upstanding lugs 36, to which are pivotally connected hammers 37, as shown at 38. Each of the hammers 37 comprises a head 39, which adapted to strike the swinging lever 32, when the hammer is released. Each han'uner further comprises an upstanding finger 40, carrying a horizontal extension 41, which operates within the guide-bracket 42. This .guide-bracket is provided with suitable openings formed t'herethrough for the reception of a movable latch 43, which is adapted. to hold the hammer against downward i'noren'ient, shown.

The latch 43 is supported by a cord 44, trained about a pulley 45 and having suitable connection with a hook 46. The pulley 45 is supported by a bracket 47. The thread 7 48. from the spool 14 is run through the A .The thread 48 passes between the fingers and 52, as shown. The hammer 50 has piv- .tile coil spring 55,

otal connection with the arm 35, shown at. 53, said hammer being provided with'an extension 54, to which is connected a retrachaving the opposite end 4' thereof connected with the outer end of the In case the thread 48 55 will oscillate strike the arm 35, as shown. should break, the spring the hammer 50 rearwardly, to

, .otl set end of the swinging lever 32, whereby such swinging lever is in turn oscillateddownwardly.

From the description of the above "referred to parts, it is obvious that automatic means are provided to elevate the rod 20, in case the thread 48 should be drawn too tight orbreak. 1

The rock-shaft 4 has a curved lever 56 rigidly mounted. upon one end thereof,

which lever has its lower end connected with a retractile coil spring 57, the upper end of which coil spring is suitably connected with an upstanding bracket 58. The bracket 58 is rigidly mounted upon the bracket 2, asshown. The spring :37 tends to oscillate the roclcshaft 4 in the direction of the arrow, shown in Fig. 2. The rockshaft 4 is provided intermediate its ends with an upstanding finger 59, which is rigidly connected with the same. This finger is normally held against movement by the catch 21, whereby the spring 57 cannot oscillate the rock-shaft. The lever 56 carries a pin 60 at its upper end, which is adapted to strike and force downwardly an extension 61, which is rigidlv connected with a lever 165.

My stop mechanism is particularly adapted for use in connection with the knitting machine diselosed in the patent granted to (it. D. Mayo, N0. 726,178. Attention is particularly called to Fig. 24 of the above referred to patent, wherein the lever 16:) is illustrated, the same being pivoted to the frame-work of the machine, as shown at 166. In this machine, when the lever 165 is swung clock-wise so that its right hand end is moved downwardly, it depresses the arm 164 of the trip-dog 161 to move the latter for freeing the belt-shifter, which cuts oil the power as is clearly explained in the-above referred to patent. I have not shown parts 164 and 161 as they may be "readily understood by reference to said patent and said Fig. 24. I

From the construction of the above referred to parts, it is obvious that when the rod 20 is elevated, above described, the spring 57 will oscillate the rock-shaft 4,

sion 61 to oscillate the lever 165. At the same time the plate 6 is oscillated downwardly, pin 7 engaging the link 8, the bandbrake is tightened on the flange 11 to prevent the rotation of the pinion 138.

In Figs. 8 and 9, I have illustrated a slightly modified means for supporting the thread 48, such means being designed to take the place of the pulley 45. The means comprises a lever (32, pivoted. intermediate its ends, as shown at 63, and having its forward end in the shape of a hook 64, through which the thread 48 passes. The rear end'of the lever (32 is provided with recesses 65, for the reception of one end of the cord 44, such cord being detachably connected with the lever, by means of a spring 66.

In Figs. 10, '11 and 1.2 I have illustrated a slightly modified form of thread .enga ing means, which may be employed in the pace of the thread engaging means herein. ove described. Such means. comprises a pair of pivoted hammers ('17, which are rovided at their lower ends with horizonta extensions whereby the pin 60 will depress the exten- 68. The extension 68: is disposed at right angles to the body portion of the hammer. A retractile coil spring (it) is connected with each of the her zontal extensions 68 and is aL-a connected itll the end of the arm 35, as shown. The hammers 67 carry thread engaging fingers 70, so constructed that the fingers of one hammer cross the fingers of the other hammer. The uppermost finger of one hammer and the lowermost finger of the other hammer are provided with eyes 7], to'serve as a guide for the thread. When this form of thread engagil'lg means is used, upon the thread being broken, the two hammers are oscillated downwardly in opposite directions, the extension 68 of one hammer striking a 'ainst the lever 32, for oscillating it. same downwardly.

In the operation of my stop mechanism, when the thread is broken, the hammercarrying the thread engaging fingers oscillates downwardly to strike the swinging lever 32, whereby the rod 20 is elevated. The rock-shaft 4 is now oscillated by spring 57 and the pin 60 engages extension 61, to etfect the oscillation of the pivoted lever 165, whereby the belt is shifted and the knitting machine stop ed; At the same time that the belt is bem shifted, the handbrake is applied to the tlilnge 11 to prevent the rota tion ofv the pinion 138. In case the thread 48 should become too tight, the hammer 37 will be released, to dro downwardly and oscillate lever 32, where y the lever 165 is oscillated in the manner above described.

I wish it understood that the f ormgof my invention. herewith shown and described is to be taken as a preferred example of the same and that certain changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the sub joined claims.

Having thus described my invention, I claim 1. The combination with means for stopping a knitting machine or thelike, including a movable lever, of mechanism to move said lever, including a rock-shaft, means to turn said rock-shaft, means to normally hold ment of said lever, including a. rock-shaft,

means to tarp said rock-shaft, means to hol the rock-she t, against movement, means including two hammers to move the last named means, one hammer being provided with thread engaging means, and means to hold the other hammer against movement, said last named means being actuated by the tightening of the thread.

, 3. The combination with means for stopping a knitting machine, including an osci latory lever, of mechanism to efi'ect a movementof such lever, includin means to turn said rock-she t, a reciprocatory rod to hold therock-shaft against movea rock-shaft,

ment, means including a pivoted lever to move said reciprocatory rod, two hammers to strike said pivoted lever, one hammer being provided with thread engaging means, a movable bolt to hold the other hammer against movement, and means connected with said bolt to move the same, the last named means being enga ed by the. thread and moved thereby when t e thread becomes too tight.

In testimony whereof I aflix'my signature in presence of two witnesses.

AROHELAS VILLENEUX E. Witnesses:

ALVAH J. DAVIS, Lawns LAMDRY. 

